申请人:Asahi Glass Company, Limited
公开号:EP3219769A1
公开(公告)日:2017-09-20
To provide a composition for powder coating material capable of forming a coating film having excellent water and oil repellency, capable of maintaining excellent water and oil repellency even when the surface is rubbed or when used in an environment in contact with water, and having excellent resistance to adhesion of organisms such that organisms such as mold, algae, etc. are less likely to adhere thereto; a powder coating material; and a coated article. The composition for powder coating material comprises polymer (A) composed of at least one member selected from polymer (A1) and polyvinylidene fluoride, and polymer (B). The polymer (A1) is a fluorinated non-block copolymer having units based on a fluoroolefin and units based on a monomer having a crosslinkable group. The polymer (B) is a fluorinated block copolymer having a segment (α) in which the content of fluorine atoms is at least 20 mass%, and a segment (β) in which the content of fluorine atoms is less than 20 mass%, wherein the difference in the numerical value of the content of the fluorine atoms represented by mass%, between in the segment (α) and in the segment (β) is at least 10, and at least one of the segment (α) and the segment (β) has a hydroxy group.
提供一种粉末涂料用组合物,该组合物能够形成具有优异防水防油性能的涂膜,即使在摩擦表面或在与水接触的环境中使用时也能保持优异的防水防油性能,并且具有优异的抗生物附着性,使霉菌、藻类等生物不易附着在上面;一种粉末涂料;以及一种涂覆物品。粉末涂料组合物由聚合物(A)和聚合物(B)组成,聚合物(A)由至少一种选自聚合物(A1)和聚偏氟乙烯的成分组成。聚合物(A1)是一种氟化非嵌段共聚物,具有基于氟烯烃的单元和基于具有可交联基团的单体的单元。聚合物 (B) 是含氟嵌段共聚物,具有氟原子含量至少为 20 质量%的区段 (α),以及氟原子含量小于 20 质量%的区段 (β),其中区段 (α)和区段 (β)中以质量%表示的氟原子含量的数值差至少为 10,且区段 (α)和区段 (β)中至少有一个具有羟基。